1. Oral Cancer Research Center Changhua Christian Hospital Changhua Taiwan
2. Department of Dentistry Changhua Christian Hospital Changhua Taiwan
3. Institute of Medicine Chung Shan Medical University Taichung Taiwan
4. Post Baccalaureate Medicine National Chung Hsing University Taichung Taiwan
5. Graduate Institute of Biomedical Sciences China Medical University Taichung Taiwan
6. Department of Otorhinolaryngology, Head and Neck Surgery Changhua Christian Hospital Changhua Taiwan